** Shares of contract research firm Inotiv NOTV.O down 18% premarket to $4.55 after overnight follow-on prices

** West Lafayette, Indiana-based co sells 6 mln shares at $4.25, which equates to $25.5 mln gross raise

** Offering price represents 23.4% discount to stock's last close

** After the bell Tues, NOTV filed for $20 mln offering with Lake Street Capital as sole bookrunner

** Co to use net proceeds for working capital, capex and other general purposes

** With ~26 mln shares outstanding, co has ~$144 mln market cap

** Through Tues close, shares have more than tripled over the past three months and are up 51% YTD

(Lance Tupper is a Reuters market analyst. The views expressed are his own)

((lance.tupper@tr.com 1-646-279-6380 ))